Sterilizer.



No.720,159. v PATENTED FEB. 10-, 1903.

R.KNY.

STBRI'LIZER.

APPLICATION Hum JUNE 24. 1902.

no 110mm.

F'l 2; M 9

UNITED STATES PATENT OFFICE,

RICHARD KNY, OF BROOKLYN, NEW YORK.

STERILIZER.

SPECIFICATION formingpart of Letters Patent No. 720,159, dated February 10, 1903.

Application filed June 24, 1902.

To all whom it may concern;

Be it known that I, RICHARD KNY, a citizen of the United States, and a resident of the borough of Brooklyn,'in the county of Kings and city and State of New York, have invented certain new and useful Improvements in Sterilizers, of which the followingis a specification. V 7

My invention relates to apparatus for sterilizing dressings, surgical instruments, and other articles, and its objects are, among others, to provide an apparatus of this character by means of which such articles may be quickly and effectively sterilized by means of heated air and steam, the said apparatus being so constructed as to be safe, accurate, and easily operated. It is illustrated in the accompanying drawings, forming a part hereof, and in which 7 Figure l is alongitudinal medial section of an apparatus,showing myirnprovements with the door in full. Fig. 2 is a view of certain portions of the apparatus located at the rear end thereof. Fig. 3 is a vertical cross-section of the connection between the st eam and sterilizing chambers and the pressure-indicators.

The inner oven or sterilizing-chamber A is formed of a metallic cylinder A, secured at its edges to the rings B and Bby being riveted to the annular flanges b and I). These flanges afford also a means for the attachment of the cylinder 0 and separate it a short distance from the cylinder A, so that a space 0 is left between the two, which space constitutes the boiler or steam-chamber of the.

apparatus. An outer cover or jacket D is also secured at its edges to the rings B and B, a space being left between it and the cylinder 0, which forms a chamber for the reception of heated air rising from the heating apparatus chamber.

Serial I\To.l 12,962. (No model.)

v A removable grateG is located near the botis also provided with a valve-controlled inlet J, through which air, either medicated or otherwise, may be admitted to the sterilizing- At the rear and lowest part of the sterilizing-chan1ber is an outlet-channel K, leading to the tube K, which has a valve K thereon, the rod of said valve extending upwardly to a point above the sterilizing-chamber and being held in position by abracket is, secured to the back plate or cover: This pipe K communicates in turn with the pipe L, which is provided with a nozzle Z at the junction for the purpose of producinga jet of steam, which Will cause a draft from the sterilizing-chamloutlet pipe N also communicates with the steam-chamber at its lower part and has a 'valve N thereon. This pipe may be employed either'to inject water into the steam-chamber or withdraw'it therefrom, and when it is desired to cleanse the said steam-chamber the water or other cleansing liquid may be poured in through the valve M and withdrawn through this pipe N. A small branch pipe 0, having a safety-valve O thereon, of the ordinary construction, is connected to the pipe L at the point where it enters the sterilizer. I 7

Communication between the steam-chamber O and sterilizing-chamber A is bad through the tubes R and R, which are connected by the tube 19, having a valve 19 thereon. Each ber throughthe channel K and pipe K. The

one of these tubes Band B is provided with a pressure-indicator R 'and R and the former has also a valve-controlled outlet B. At the point where the tube R enters the sterilizing-chamber it is connected to a pipe S, which extends along the top of said chamber to a point near the rear thereof and is surrounded by a shield S. It will be observed that by this arrangement the pressure in both steam and sterilizing chambers may be read independently, and by the indicator B may also be determined the extent of the vacuum produced in the latter by means of the jet Z, by means of which the air is withdrawn therefrom through the channel K.

A water-gage T is located at one side of the sterilizing apparatus and communicates with the steam-chamber through the same connection as the pipe N.

I have provided a double means for heating the apparatus and generating steam in the steam-chamber. One is a gas-burner U, consisting of a perforated pipe runninglengthwise of the sterilizer, at the bottom thereof, and supported upon the frame W at either end. The other is a coil V, locatedin the lower part of the steam-chamber and having its ends V extending through the bottom thereof to afford a convenient means for connecting with steam-supply and outlet pipes.

What I claim is 1. The combination with the inner sterilizing-chamber and the surrounding steamchamber of a sterilizing apparatus, said sterilizing-chamber havingan outlet leading from the lower part thereof, of vacuum-producing means for producing a draft through said outlet consisting of a valved pipe leading from said outlet, a valved pipe communicating with said steam-chamber, said pipes having communication with each other, and a nozzle at the junction of said pipes.

2. A sterilizing apparatus, comprehending an inner sterilizing-chamber having an outlet; a steam-chamber surrounding the same; a valved means through which the sterilizingchamber has communication with said steamchamber; a pressure-indicator on one side of the valve of said means; valved vacuum-producing means, consisting of a pipe leading from said steam-chamber, a pipe leading from said outlet of the sterilizing-chamber, said pipes communicating with each other, and a nozzle at the place of communication thereof; and an indicator so related to the apparatus as to indicate both pressure and vacuum in the sterilizing-chamber.

3. The combination withasterilizing-chamber, a steam-chamber surrounding the same, and means through which steam is conducted from said steam-chamber to within said sterilizing-chamber,of means for supplyingliquid to said steam-chamber and means for converting said liquid into steam, said converting means embracing a burner below the steam-chamber and a heating-coil within said chamber.

4. The combination, in a sterilizing appa ratus, with the inner sterilizing-chamber, the outer steam chamber, and valved means through which said chambers have communication with each other, of a burner contiguous to said steam-chamber, a steam-coil in said chamber and near said burner, a cover to said steam-chamber for confining the heated air radiated therefrom and rising from said burner, and valved means for supplying liquid to said steam-chamber.

5. In a sterilizing apparatus, the combination of an inner sterilizing-chamber, a door of corresponding diameter, a rim at one end of said sterilizing-chamber of greater diameter than said chamber, an opening in said rim below the bottom of the sterilizing-chamber, a valve on said opening, an outlet in the lower part of said sterilizingchamber, a steamchamber surrounding the sterilizing-chamber, a pipe connected to the upper part of said steam-chamber and to the said outlet, a valve on the outlet-pipe and a valve on the said steam-pipe, a pipe connection between the steam-chamber and sterilizing-chamber and a valve thereon.

6. In a sterilizing apparatus, the combination of an inner sterilizing-chamber, a door of corresponding diameter, a rim at one end of said sterilizing-chamber of greater diameter than said chamber, an opening in said rim below the bottom of the sterilizing-chamber, a valve on said opening, an outlet in the lower part of said sterilizing-chamber, a steamchamber surrounding the sterilizing-chamber, a pipe connected to the upper part of said steam-chamber and to the said outlet, a valve on the outlet-pipe and a valve on the said steam-pipe, a pipe connection between the steam-chamber and sterilizing-chamber, a valve thereon, and a pressure-indicator on the said pipe.

7. In a sterilizing apparatus, the combination of an inner sterilizing-chamber, a door of corresponding diameter, a rim at one end of said sterilizing-chamber of greater diameter than said chamber, an opening in said rim below the bottom of the sterilizing-chamber, a valve on said opening, an outlet in the lower part of said sterilizing-chamber, a steamchamber surrounding the sterilizing-chamber, a pipe connected to the upper part of said steam-chamber and to the said outlet, a valve on the outlet-pipe and a valve on the said steam-pipe, a pipe connection between the steam-chamber and sterilizing-chamber, a valve thereon, and a pressure-indicator between said valve and steam-chamber.

8. In a sterilizing apparatus, the combination of an inner sterilizing-chamber, a door of corresponding diameter, a rim at one end of saidsterilizing-chamber of greater diameter than said chamber, an openingin said rim below the bottom of the sterilizing-chamber, a valve on said opening, an outlet in the lower part of said sterilizing-chamber, a steamchamber surrounding the sterilizing-chamher, a pipe connected to the upper part of said steam-chamber and to the said outlet, a valve on the outlet-pipe and a valve on the said steam-pipe, a pipe connection between the steam-chamber and sterilizing-chamber, a valve thereon, and a pressure-indicator between said valve and sterilizing-chamber.

9. In a sterilizing apparatus, the combination of an inner sterilizing-chamber, a door of corresponding diameter, a rim at one end of said sterilizing-chamber of greater diameter than said chamber, an opening in said rim below the bottom of the sterilizing-chamber, a valve on said opening, an outlet in the lower part of said sterilizing-chamber, a steamchamber surrounding the sterilizing-cham- RICHARD KNY.

Witnesses:

HERMAN MEY R, STEPHEN J. 00X. 

